Benchmarking Signorini and exponential contact laws for an industrial train brake squeal application
TypeCommunications avec actes
Contact representation of structure interactions for finite element models is nowadays of great interest in the industry. Two contact modellig strategies exist in the literature, either based on a perfect contact with no interpenetration of structures at contact points, or based on functional laws releasing the contact constraint through pressure-penetration relationships. Both strategies require very different and rarely documented numerical implementations, making difficult any objective comparison. This paper presents a benchmark between ideal contact and a functional law of the exponential type applied to squeal simulations by complex mode analysis of an industrial railway brake.
Showing items related by title, author, creator and subject.
VERMOT DES ROCHES, Guillaume; CHIELLO, Olivier; BALMES, Etienne; LORANG, Xavier (2015)Estimation of brake systems stability related to noise emission is part of the industry state-of-the-art for brake design. Improved assessment of stability would allow better NVH performance from early design stages thus ...
Squeal measurement using operational deflection shape. Quality assessment and analysis improvement using FEM expansion. BALMES, Etienne; VERMOT DES ROCHES, Guillaume; CHANCELLIER, Thierry; MARTIN, Guillaume (FISITA, 2017)In presence of squeal, Operational Deflection Shapes (ODS) are classically measured to gain understanding of brake behavior. A simple numeric example is analyzed to justify the use of time-frequency analysis and shows that ...
MARTIN, Guillaume; BALMES, Etienne; VERMOT DES ROCHES, Guillaume; CHANCELIER, Thierry (2015)To be confident in the prediction capability of a model, verification and validation steps are classically performed. Verification checks that the model is properly solved. Since the model used are fairly standard, this ...
MARTIN, Guillaume; BALMES, Etienne; VERMOT DES ROCHES, Guillaume; CHANCELIER, Thierry (2016)Squeal occurrences are quite common in brakes in production and involve coupling of modes. Detailed understanding of vibration patterns typically requires FEM models updated using test results. The process used at Chassis ...
Time/frequency analysis of contact-friction instabilities. Application to automotive brake squeal. VERMOT DES ROCHES, Guillaume; BALMES, Etienne; PASQUET, Thierry; LEMAIRE, Rémi (ISMA, 2010)Robust design of silent brakes is a current industrial challenge. Braking systems enter in the more general context of unstable systems featuring contact friction interaction. Their simulation requires time integra- tion ...